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Why Isnt My AC Unit Turning On?
Posted On: May 17, 2024
If your AC unit isn't turning on, there could be several reasons, ranging from simple issues that you can fix yourself to more complex problems requiring a professional technician. Here are some common causes and potential solutions:
Basic Checks
-
Power Supply
- Check the Circuit Breaker: Ensure the circuit breaker for the AC unit is not tripped. Reset it if necessary.
- Power Switch: Verify that the power switch near the AC unit (usually outside) is turned on.
- Fuse Box: Check for any blown fuses and replace them if needed.
-
Thermostat Issues
- Correct Settings: Make sure the thermostat is set to "cool" and the temperature setting is below the current room temperature.
- Battery Check: If your thermostat uses batteries, check if they need replacing.
-
Remote Control Issues
- Battery Check: Ensure the remote control batteries are not dead.
- Proper Functioning: Verify that the remote control is working correctly by testing it on another device, if possible.
Common Problems and Solutions
-
Clogged Air Filter
- Replace the Filter: A clogged filter can restrict airflow, causing the AC to shut down. Replace the air filter if it looks dirty or hasn't been changed in a while.
-
Blocked Condenser Unit
- Clear Debris: Ensure the outdoor condenser unit is free of debris, leaves, and dirt. Clear away any obstructions that might be blocking airflow.
-
Drain Line Issues
- Check for Blockages: The condensate drain line could be clogged, causing the unit to shut off. Clear the drain line if you notice any blockages.
Technical Issues
-
Capacitor Failure
- Professional Check: The capacitor helps start the AC’s motor. If it’s faulty, the unit won’t turn on. This usually requires a professional to diagnose and replace.
-
Compressor Problems
- Listen for Noises: If the compressor is failing, you might hear unusual noises when the AC tries to start. This often needs professional attention.
-
Refrigerant Levels
- Check for Leaks: Low refrigerant levels due to a leak can prevent the AC from working. A technician can identify and fix leaks and recharge the refrigerant.
-
Faulty Wiring or Connections
- Inspect Wiring: Look for any obvious signs of damage or loose connections in the wiring. This can be dangerous, so consider consulting a professional.
When to Call a Professional
- Persistent Issues: If basic troubleshooting doesn’t solve the problem, it’s best to call a professional HVAC technician.
- Electrical Components: For issues involving capacitors, compressors, or wiring, professional diagnosis and repair are recommended due to the risk of electrical shock or further damage.
By methodically checking these potential issues, you can often identify the cause of your AC unit not turning on. However, for complex problems or if you're unsure, professional help is the safest option.
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See What Our Customers Are Saying:
Feb 1, 2021
Dave was very pleasant to deal with and Twintech responded quickly when our furnace needed to be replaced ASAP. Installation was done on time and the crew were neat and tidy. We now have a great furnace that suits the needs of our family.
Feb 1, 2021
When your furnace kicks in over the holidays and you're not sure where to turn.. I'm so thankful that this company returned my phone call. I appreciated their transparency and clarity which allowed me to make an informed decision. With various quotes thrown at you, it can be difficult to make the right decision and trust the solutions offered by different companies. TwinTech spoke the truth and delivered on their word. Neat, timely and clean service; the peace of mind I needed during a very cold holiday season. I highly recommend them!
Feb 1, 2021
Pulling a old unit out and installing a modern heating system! Required drilling holes in the wall for the newer pipes. We went from 70% (I am willing to bet it was far less due to lack of maintenance and just old) to 96% newer . It now feels warmer and more pressure and we use to run extra heaters and feel as though they are not necessary!
Feb 1, 2021
I received three quotes before deciding to choose Twintech. Dave's prices was much more reasonable than the competitors. I most appreciated their honest recommendations. Others tried to oversell their products and services. Thank you Dave!
Feb 1, 2021
They had the best price and did a great job on the installation. Recommend them to anyone.
Feb 1, 2021
It was a amazing and professional high quality job
Friendly and very helpful representatives
Thank you for understanding my concern
And explain very well
Overall we pleased with your service
Tanks
May 15, 2020
My 19 year old furnace stopped working when the cold weather hit in November, and I was left without heat. I interviewed several companies and found TWINTECH HEATING and COOLING to be very knowledgeable, quick to respond to my inquiries and very competitively priced.
Dave provided all of the information and pricing ahead of time and set up the appointment for the installation. Greg and Mitch arrived on time to do the installation and worked quickly and efficiently to complete the job.
After the completion of the installation, Dave followed up to ensure that everything was working well and that I didn't have any concerns.
Overall, this was a low-stress and flawless experience from start to finish. I would highly recommend TWINTECH HEATING and COOLING to anyone that requires a new furnace.
May 14, 2020
Our 20 year old furnace broke down during the first cold weekend this past November and our usual HVAC company never returned our phone call. Their loss, missing out on a sale since we didn't want to spend much fixing an old furnace and our 40 year old air conditioner was also long overdue for replacement. We proceeded in obtaining three different quotes for furnace and air conditioner replacement, and proceeded with the one we received from Twintech.
Dave was friendly, knowledgable and accommodating to our schedule and provided with us with a price that fell in the middle of the three quotes that we had. We felt that the Amana furnace and air conditioner he quoted us on were the best products and value offered to us and felt most comfortable with the professionalism and reputation of Twintech.
Greg, Grant and Mitch were at our house for installation the day after we decided to proceed. The guys were friendly and informative, the job was completed efficiently and workmanship appears excellent. Our house is certainly much more comfortable with the new two-stage variable speed Amana furnace compared to the old clunker! And, we're looking forward to enjoying the new air conditioner once summer rolls around again. Thanks Twintech!
May 13, 2020
We are very happy with our new furnace. The service was excellent the guys worked 6 hours straight through and there was no mess at all they took the old furnace boxs etc with them they then explained everything to us they were very helpful and pleasant , when we need a new air conditioner we know who to call!
May 12, 2020
The crew from sales to installation was very professional and had great attention to detail
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